Question

cos (2x + 3) derivative ​

Answer 1

Solving by chain rule :-

Differentiating with respect to x

= $\frac{d(cos(2x + 3))}{dx}$

= $- \sin(2x + 3) \frac{d(2x + 3)}{dx}$

= $- 2 \sin(2x + 3)$

Hope it helps......✌